Hydro - Science topic

There are few studies on the extraction of bioactive compounds from olive pomace by the microwave method of hydro diffusion and gravity (MHG). Therefore, this study extracted bioactive compounds from pomace by MHG using a central rotational compound (DCCR). The statistical model showed a significant difference for the variable potency (W) in the ex...

Animal-based foods such as meat, fish, egg, and milk, are the most important sources of protein with high biological value. But the shelf life of these products is very short due to the higher moisture content. Drying is widely used for the preservation of a large number of food materials because the dried products are more stable during storage. C...

Hydraulic turbine is the main building block of any micro hydro power plant (MHPP). In this paper, the selection criterion of a suitable type of turbine for low head micro hydro schemes has been discussed briefly. Again a general design procedure and fabrication process of Cross-Flow Hydro Turbines (CFHT) has been described in this paper. A soft pr...

Voltage stability issues within Nigeria's 330 kV power grid pose significant risks to the reliability and efficiency of the power supply, hence, there is the need for urgent investigation. This research aims to assess the voltage stability of Nigeria's 330 kV Power grid with specific objectives viz; identifying critical buses and branches, assessin...

The integration of advanced nuclear technologies like the System-Integrated Modular Advanced Reactor (SMART) offers a transformative approach to enhancing grid reliability in developing countries. This study focuses on the Nairobi distribution network in Kenya, a critical region characterized by an evolving energy mix of geothermal, hydro, solar, a...

The article materials are devoted to the hydro treating effects research, such as scouring and dyeing, on the elastic properties of the previously single jersey for a certain period of time and at the different temperatures by comparing the force necessary to lengthen the fabric by 80% of the original length and width after the process of fixing, s...

Background: Teucrium polium L. has an essential place in traditional medicine throughout the world. Their use, based on empirical knowledge passed down from generation to generation, has helped to treat a multitude of illnesses and relieve a variety of symptoms. These traditional practices have laid the foundations for modern research, which seeks...

Large‐scale energy storage solutions are crucial to ensure grid stability and reliability in the ongoing energy transition towards a low‐carbon, renewable energy based electricity supply. This article presents the evaluation of a novel low‐head pumped hydro storage system designed for coastal environments and shallow seas. The proposed system addre...

This study proposes a floating photovoltaic - pumped hydro energy storage system integrated with a water electrolyzer for combined power and hydrogen generation. Compared to solutions without electrolyzers, this integrated system is able to further mitigate the non-programmable photovoltaic generation and simultaneously decarbonize hard-to-abate se...

The transition to renewable and sustainable energy sources is critical to solving the environmental and socioeconomic problems associated with the use of fossil fuels. This study uses an interdisciplinary approach to analyze the challenges and prospects of a sustainable energy transition in contexts with the recent discovery and exploitation of fos...

Power converters play a crucial part in optimizing energy conversion in hydropower plants, but traditional designs often face challenges such as limited efficiency, high component stress, and complex control. This manuscript presents a hybrid approach for high-gain DC–DC converters in hydropower applications. The proposed hybrid technique is the jo...

Plain Language Summary Ice cover on the Laurentian Great Lakes has become more variable over the past 25 years. To better understand this variability, we re‐develop a model from a previous study focused on a portion of the shoreline of Lake Superior. The previous study, which culminated in 2015, suggested a change in both interannual variability an...

The observation of the medium response generated by the propagation of high energy partons in the quark gluon plasma produced in heavy-ion collisions would provide a clear and unmistakable evidence for the hydrodynamic behavior of the bulk. Recently, it has been argued that the features of the medium's back-reaction to the jet could be cleanly impr...

Biochar has received widespread attention as a promising amendment for heavy metal stabilization due to its abundant porosity and surface functional groups. However, the role of biochar-derived dissolved organic matter (BDOM) is usually overlooked. In this study, we systematically investigated the leaching dynamics of BDOM from garden wastes throug...

The rapidly changing climate in the High Arctic is posing significant challenges to its ecosystem. To better understand the changes, this study uses Uncrewed Aerial Vehicle (UAV) technology equipped with a thermal camera to investigate ground and water temperatures in the catchments of southwest Spitsbergen. This approach provides high-resolution,...

Lampung cardamom (Amomum compactum) has the potential to produce essential oils used for aromatherapy, cosmetics, and pharmaceutical purposes. This research aims to study the kinetics model that can represent the extraction process using the MHG method with the addition of steam flow. The operating variables considered include microwave power (300-...

This work aims to determine the chemical composition of Juniperus communis (J. communis) essential oil from different localities in the Republic of Serbia and examine its antimicrobial and antioxidative effects together with chemometric analysis and principal component analysis. Essential oils were extracted via hydro distillation from the fruits o...

A significant portion of the population lives in rural regions where the grid cannot provide them with enough power. Rising power demand, fossil fuel prices, limited fossil fuels such as coal, and environmental issues are the key drivers driving the usage of renewable energy resources for generating electricity. As a result, an alternate option for...

Passiflora edulis Sims is widely used in traditional medicine in many countries worldwide for the treatment of diverse diseases due to its scientifically demonstrated antitumor, anti-inflammatory and antihypertensive effects; however, no preclinical studies have been done on the diuretic activity of the hydro ethanolic extract from P. edulis leaves...

North Eastern India has nine percent of India's geographical area and contributes three percent to the country's gross domestic product (GDP). In relative terms, it is one of India's economically laggard regions. However, given its natural resources base and strategic location, NER has the potential to become India's "powerhouse" in terms of trade...

The demolishing of concrete structures such as bridges, tunnels, buildings, and pavements has become a common activity due to reasons such as renovation, rehabilitation, retrofitting, or simply ending the service life of these structures. This upsurge has brought major challenges in managing construction demolition waste (CDW). Traditional demoliti...

This research examines the design and implementation of a Portable Pico Hydro Power Plant (PHPP) featuring a cross-flow turbine with a capacity of 300 watts. Pico hydro is a compact and efficient form of hydropower generation tailored to meet the energy requirements of remote plantation areas. The primary aim of this study is to optimize the use of...

Renewable energy systems, including solar, wind, hydro, and biomass, are increasingly critical to achieving global sustainability goals and reducing dependence on fossil fuels. The integration of these renewable energy sources into the electricity grid presents both opportunities and challenges, requiring advancements in technology, policy framewor...

The multi-use water system (MUWS) approach means that different uses are considered at the planning stage, and the infrastructure is designed to support them. The implementation of hydro-agricultural irrigation schemes is an opportunity to develop multi-use water points. Alongside the development of irrigation, other productive activities can be de...

Dear Colleagues, The global pursuit of sustainable development has brought renewable energy sources (RESs) to the forefront as crucial solutions for reducing carbon emissions and mitigating climate change. The integration of advanced technologies into RESs has significantly enhanced their efficiency, reliability, and feasibility, supporting the gl...

Due to climate change the drop in spring-water discharge poses a serious issue in the Himalayan region, especially in the higher section of Himachal Pradesh. This study used different climatic factors along with long-term rainfall data to understand the decreasing trend in spring-water discharge. It was determined which climate parameter was most c...

As motor capacity and rated voltage increase, the demand for motor insulation also increases. Additionally, the electric field distribution at the end of a large-scale hydro generator is extremely nonuniform, and corona discharge occurs. This destroys the main insulation, which significantly affects the service life of electrical machinery. The reg...

1-(1-Chloro­eth­yl)-6,7-dimeth­oxy-1,2,3,4-tetra­hydro­iso­quinoline was synthesized through the reaction of homoveratryl­amine with racemic lactic acid. The formation of two enanti­omers, RR and SS, was detected by performing X-ray diffraction analysis on their chloride salts. The asymmetric unit of the crystal consists of a C13H19ClNO2⁺ mol­ecula...

Cinnamomum zeylanicum is an aromatic species with essential oil in its leaves, stems, and roots, widely used in traditional medicine and culinary applications. The essential oil of C. zeylanicum exhibits various biological activities, such as antioxidant and antifungal properties. This study aimed to evaluate the essential oil extracted from the le...

Early Eocene (∼56–48 Ma) climates are useful to investigate polar climate dynamics in the absence of ice. We explore early Eocene orbital variability of Arctic climate using sediments recovered by the Arctic Coring Expedition (ACEX). High resolution records of lipid biomarkers (GDGTs; 2‐kyr) and palynological assemblages (5‐kyr) in the ∼4 m interva...

An efficient and reliable multistage feature extraction facilitates the selection of useful features from multivariate time series data, resulting in the enhanced predicting ability of prediction models. For this reason, this study proposes a hybrid prediction model (HPM), namely, CA-HHO-ICEEMDAN-STA-Seq2Seq based on multistage feature extraction,...

The advent of precision medicine in oncology emphasizes the urgent need for innovative therapeutic strategies that effectively integrate diagnosis and treatment while minimizing invasiveness. Manganese oxide nanomaterials (MONs) have emerged as a promising class of nanocarriers in biomedicine, particularly for targeted drug delivery and the therape...

The Philippines currently depends heavily on fossil fuels, which are vulnerable to price fluctuations. In response, the 2023-2050 Philippine Energy Plan sets ambitious targets to increase the share of renewable energy in the capacity mix: 35% by 2030 and 50% by 2040. Achieving these targets require more than just policy—it needs public understandin...

This paper examines whether specific leadership competencies are relevant in a cyber crisis and what it takes to manage one effectively. Our increasing dependence on technology exposes us to risks and makes us more vulnerable to digital crises. Cyberattacks are more common and can affect even well-prepared companies. Leadership during a crisis can...

This study addresses the load frequency control (LFC) within a multiarea power system characterized by diverse generation sources across three distinct power system areas. area 1 comprises thermal, geothermal, and electric vehicle (EV) generation with superconducting magnetic energy storage (SMES) support; area 2 encompasses thermal and EV generati...

In both rural and urban areas, reliable grid-connected power is essential for success. In Africa, the three main renewable energy sources used to generate electricity are solar, wind, and hydro. The report examines the current situation of the power sector and recommends a course of action for the African nations to follow in order to integrate the...

Energy–economy–environment sustainability is critical in shaping energy policies, especially in developing countries facing energy shortages. Investment in energy infrastructure, such as under the China–Pakistan Economic Corridor (CPEC), provides an opportunity to explore how such investments impact economic growth, environmental quality, and energ...

This study examines economic growth, energy consumption, financial development, trade openness, urbanization, and environmental degradation in 47 Belt and Road Initiative (BRI) countries from 1980 to 2022. Panel unit root tests (LLC, IPS, ADF, and PP) ensured data correctness and stationarity. Three co-integration tests examined the variables' conn...

Forthcoming EU environmental requirements on water resources quality are likely to include concentration limits of certain contaminants of emerging concern, such as pharmaceuticals and personal care products. However, understanding the occurrence of organic contaminants, including contaminants of emerging concern, in hydro(geo)logical media remains...

This study reviews the relevant theories and literature on the current scenarios regarding energy security in the European Union (EU). Post-Covid 19 has brought significant changes in global politics and the EU's international governance policies have also been changed in recent years. This chapter describes the EU's effectiveness of a new renewabl...

The public services system is characterized by a complex intersectoral interaction, which shapes the comfort of housing and living. One of the main utility resources is electricity, the consumption of which is surrounded by a lot of debate nowadays. On the one hand, the number of mobile and other devices powered by electrical energy is increasing....

Lemon contains essential oil compounds found in the peel, namely the flavedo. This section can produce essential oils by various methods, including the distillation method. Differences in distillation methods can affect the quality of essential oils. In the essential oil production process, paying attention to the distillation method and the sample...

This study aims to evaluate the antimicrobial properties of Petiveria alliacea root fractions and volatile oils against selected bacteria and fungi via in vitro and in silico approaches. Petivera allliaceae dried root methanol extract was partitioned into n-hexane and methanol fractions, while volatile oil was extracted using the Clevenger-type hyd...

Groundwater is an important source of freshwater; drinking water; and service water for irrigation, industrial and geothermal uses. It is also the largest terrestrial freshwater biome in the world. In many areas, this habitat is naturally or anthropogenically threatened. This study uses long-term groundwater data from southwestern Germany to identi...

Nguồn xăng, dầu diesel đang có nguy cơ suy giảm dần do trữ lượng có hạn và nhu cầu sử dụng ngày càng lớn, đồng thời khí thải từ những việc đốt cháy xăng, dầu diesel của động cơ đốt trong là tác nhân chính gây ô nhiễm môi trường như: Carbon monoxide (CO), Ôxít nitơ (NOx), Carbon dioxide CO2,…gây ô nhiễm môi trường, góp phần gây hiệu ứng nhà kính.Sự...

The search and use of new and alternative sources of energy is an echo of the goals of sustainable development. Along with the expansion of the world economy, the demand for energy is increasing, which gives an important role to renewable energy resources in the background of the limited resources of the planet. It includes wind and solar energy, h...

This study analyzes the current state and future prospects of the hydroelectric energy sector in Turkey. Firstly, it examines the development and current status of Turkey’s hydroelectric energy sector. Subsequently, it addresses how government policies and the regulatory framework have shaped the hydroenergy sector in Turkey. Furthermore, the study...

“Analysis of Future Value and Present Value on Profit Growth of Hydro Coco Products at PT. Sanghiang Perkasa (Kalbe Nutritional Kn7) Jalan Kima Makassar.” Supervised by Meldilianus N J Lenas and Ihsan Guntur. This study aims to analyze the impact of Future Value and Present Value on the profit growth of Hydro Coco products at PT. Sanghiang Perkasa....

The main objective of the current endeavor is to monitor hypothetical processes utilizing a Sisko tri-hybrid fluid over a rotating disk with entropy generation suspended in Darcy-Forchheimer porous medium. Electro Magneto Hydro Dynamics (EMHD), non-linear thermal radiation and exponential and thermal- space dependent heat source/sink coefficients a...

Gandak Hydropower station (GHPS) is located at Nawalparasi of total capacity 15 MW with adjustable blade bulb/tubular turbine with three units of each 5 MW. Huge sand concentration especially during monsoon and over 40 years of operation, turbine components at GHPS are severely eroded. This study aimed to detect the erosion prone section of Kaplan...

The inclusion of renewable energy into the grid causes issues thanks to the intermittent features of sources such as solar and wind. Energy storage technologies are crucial for grid reliability and efficiency. This study explores how batteries, pumped hydro, and flywheels affect grid-connected renewable energy systems. A thorough investigation is m...

This research article explores the potential of Pumped Storage Hydroelectric Power Plants across diverse locations, aiming to establish a sustainable electric grid system and reduce per-unit energy costs. A distinctive feature of the study involves forecasting solar irradiance on large-scale hydroelectric dam locations to identify optimal sites for...

The optimal power flow (OPF) problem is a nonlinear, multi-constraint and multimodal optimization problem, which is widely used in the operation and planning of modern power systems. Due to these complex characteristics, solving the OPF problem is a challenging task in power system optimization. However, most of the existing OPF methods are unconst...

The global transition towards renewable energy sources has gained momentum in recent years, driven by the growing concerns over climate change and the diminishing availability of fossil fuels. Simultaneously, advancements in artificial intelligence (AI) have revolutionized various sectors, propelling the field into new dimensions. This manuscript p...

Due to its potential to improve seed germination and early seedling development, "seed priming" has garnered attention recently. This review article covers seed priming systems, their processes, and their many crop production purposes. Seed priming and its importance in seed performance are discussed. Seed priming methods include osmotic, hydro-, h...

Purpose Spleen tyrosine kinase (Syk) is a widely-expressed cytoplasmic non-receptor tyrosine kinase involved in regulating various signaling pathways and plays an important role in chronic inflammation and autoimmune diseases. Gain-of-function SYK variants have been implicated in pediatric inflammatory bowel diseases. This study aimed to investigat...

Water resource managers and Geographers share common interests in meeting Sustainable Development Goal Seven (universal access to affordable energy) and addressing climate change. Hydropower plays a key role but dams have environmental, social and cultural consequences. The Hydropower Sustainability Assessment Protocol (HSAP) aims to ensure that da...

Rainfall is a crucial component of the Earth's water cycle, providing essential moisture for life. Traditional linear regression models often struggle to capture the complex interactions between meteorological variables, especially circular variables like wind direction. This study focused on circular regression models to overcome these drawbacks a...

Located in Southern Europe, the Drina River Basin is shared between Bosnia and Herzegovina, Montenegro, and Serbia. The power sectors of the three countries have an exceptionally high dependence on coal for power generation. In this paper, we analyse different development pathways for achieving climate neutrality in these countries and explore the...

The demand for electric power generation increases every day. Electric power is generated through using thermal, hydro, thermal, and nuclear energy and so on. However, the availability of these resources made us to depend on renewable energy sources for power generation. The PV arrays are installed in lot of applications either by grid connection o...

In this paper, we present and discuss the initial results of a large-scale research project involving laboratory and field investigations of abrasion resistance of different types of concrete. The decision to study in more detail the abrasion resistance of fibre-reinforced concrete with granulated rubber was based on the results of previous researc...

The study looks at enhancing the efficiency of power supply via solar-pumped hydro storage system. Renewable energy means are ecologically friendly but frequently experience intermittent power generation, making it difficult in ensuring a continuous supply of electricity to end consumers. As a result of the variable nature of power generated by the...

The TNB Hydro Catchment Area Surveillance (THyCAS) is a web-based geographic information system (GIS) used to monitor hydropower dam catchment areas in Peninsular Malaysia. It can also be used for landslide rapid impact assessment by monitoring the surrounding landslide area. However, during the rainy season, satellite images are unable to provide...

Sodium-ion batteries are gaining attention as a viable alterna